FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 4) (Fair Value, Measurements, Nonrecurring, USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value, Assets Measured on a Nonrecurring Basis
OREO	$ 1,676	$ 17,521
Loans Receivable | Non-PCI loans
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	39,417	67,811
Loans Receivable | Non-PCI loans | CRE
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	13,648	26,089
Loans Receivable | Non-PCI loans | C&I
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	11,356	16,581
Loans Receivable | Non-PCI loans | Residential
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	14,306	25,034
Loans Receivable | Non-PCI loans | Consumer
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	107	107
Significant Unobservable Inputs (Level 3)
Fair Value, Assets Measured on a Nonrecurring Basis
OREO	1,676	17,521
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI loans
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	39,417	67,811
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI loans | CRE
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	13,648	26,089
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI loans | C&I
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	11,356	16,581
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI loans | Residential
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	14,306	25,034
Significant Unobservable Inputs (Level 3) | Loans Receivable | Non-PCI loans | Consumer
Fair Value, Assets Measured on a Nonrecurring Basis
Impaired loans	$ 107	$ 107